-Start AND stop time for all events in the information page of them. The ingame map shows.. well shows weird stuff ;)
-Groups in same location should enter same battle AUTOMATICALLY when leader enters. Makes no sense at all to join in manually afterwards.
-All except boss fights/PVP should be closed fights to group/individual. If a group went in, nobody can join from outside, if individual, same thing.
-Few other things i totally forgot while writing the first 3.. If someday i remember them, will (maybe) definately post here ;)